How to use Chmod Calculator

What it does

Determine octal chmod file permissions interactively using simple public/group check selectors. It runs entirely in your browser — your input never leaves your device.

Options

Every setting this tool exposes, straight from the code that validates it.

Worked example

Run these settings on the tool page:

• octal: 755

You get:

{
  "octal": "755",
  "symbolic": "rwxr-xr-x",
  "user": "rwx",
  "group": "r-x",
  "others": "r-x"
}

Troubleshooting

• Nothing happens / the output stays empty. octal is required — the tool waits until you provide it.
• It is slow on very large input. Everything runs in your browser, so speed depends on your device. Very large inputs are best split up, or run through the API where the work happens on our servers.

Automating it

The same logic is available as a REST endpoint, so you can run it from a script, a CI job or your own app.

Bash
curl "https://api.toolsxpo.com/v1/chmod-calculator" \
  -H "Authorization: Bearer $TOOLSXPO_KEY"

It costs 1 credit per successful call. See the full endpoint reference, or try it in the playground.

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